Barbecue grill



FIG. 1 is perspective view of a barbecue grill showing the new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a side elevation view thereof, the opposite side being a mirror image thereof; and,

FIG. 5 is a top plan view thereof.

The broken lines shown in the drawings identify environmental structure or boundaries that form no part of the claimed design. 

The ornamental design for a barbecue grill, as shown and described. 